The Rage Black Series Trypan +P is a combination of our most popular shock collar models. The age hardened Titanium Tough ferrule is machined to scrupulous specifications, and assembled with our sharper-than-ever .039? thick, 420 SS blades. The Hypodermic tip features a proprietary design to help bust through bone, create micro-fractures to allow the main blades to successfully pass through, while retaining as much edge as possible, and ensure maximum penetreation through soft tissue. The 1.75? cut rear deploy main blades stay locked in place in your quiver and inflight thanks to our proven Shock Collar Blade Lock technology. The Black Series comes with 6 shock collars 3 Black Collars for use with vertical bows and 3 Red collars for use with crossbows. Each collar has 6 petals and can be used up to 3 times (once per petal). Once the .039? blades encounter hair and hide they push rearward and deploy into a massive 1.75?+ cutting diameter, leaving a massive entry wound and providing unparalleled blood trails. The +P is designed for maximum penetration on even the largest of game or for the archers with shorter draw lengths or lower draw weights. With its swept back blade angel and 1.75? cut the Tyrpan +P provides massive entry wounds, huge blood trails and unrivaled penetration.